In the last six weeks,Jim has read four books为什么用has+read

cuios 1年前已收到2个回答举报

zesthao 幼苗

共回答了21个问题采纳率：85.7% 举报

表示已经完成了,而且in the past .是现在完成时的标志.

1年前

头发长-见识短幼苗

共回答了4个问题举报

现在完成时，两种理解方法：1、到现在为止，不知道动作有没有完成 2、过去的动作对现在的影响。此句属于第2点。从现在算起，之前的6个星期读的书，强调的是现在到之前6个星期所完成的动作，对现在所造成的影响是读了4本书.

1年前

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你能帮帮他们吗

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